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Cornerstone · Grades 3–5 Keystones #1 4 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 4 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 3⁄5

    Answer: 23⁄30
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 12

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:2

    Answer: 8 and 16
  5. 5. Statistics Mean

    Find the mean of: 6, 13, 5

    Answer: 8

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